1021210022021 has 8 divisors (see below), whose sum is σ = 1167734592384. Its totient is φ = 874844807760.

The previous prime is 1021210021969. The next prime is 1021210022029. The reversal of 1021210022021 is 1202200121201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1021210022021 - 2²⁶ = 1021142913157 is a prime.

It is a super-2 number, since 2×1021210022021² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021210021987 and 1021210022005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021210022029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39825290 + ... + 39850923.

It is an arithmetic number, because the mean of its divisors is an integer number (145966824048).

Almost surely, 2^{1021210022021} is an apocalyptic number.

It is an amenable number.

1021210022021 is a deficient number, since it is larger than the sum of its proper divisors (146524570363).

1021210022021 is an equidigital number, since it uses as much as digits as its factorization.

1021210022021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79678051.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1021210022021 its reverse (1202200121201), we get a palindrome (2223410143222).

The spelling of 1021210022021 in words is "one trillion, twenty-one billion, two hundred ten million, twenty-two thousand, twenty-one".